Pneumatic charging device



Oct, 30, 1928.

C. C. HANSEN PNEUMATC GHARGING DEvwE Filed 0012.514. 1927 IN VEN TOR.

PatentedrjkQch30,'1928;

' 21er); riweNrrgED-jSTAT-se` bunnies sensing or EAsToN, iPniuysYmMilling?y l COMPANY, or JERSEY CITY, NEW JERSEY,v acont-online o niNEWJERsEY-- V Y y j"NEMATIC'onnneineinnviciil Y Thisv invention relates lto charging v'de-A vices, but morefpa'rticularly to a pneumatic charging deviceadapted v for depositing an explosive inasubmerged drillhole'.v f I .if It isv an object 'of the invention toenable an=. explosive to 'be suitably depositedl and vdrill hole.A

compressed-in the, bottom'ofga submerged Y Other-objects wil-lbeinparti-obvious inpartpointed'out hereinafter1-l-- v n 'The i invention consists of thev combination. `j ofelements and arrangement offparts having; the-'general modeoi:` operation substantially as hereinafter described and claimed andil-.

lustrated in fthe accompanying drawing which/is a sectional elevation ofapneumatic charging device constructed iniac'cordance Y v Y Y Preferably a slot g isfformedin thesideiof *i the UbGEFOrthe; rfaccommkjdationofV the'' wire j Y j Vln--order'tolock therpiston L,,as,1well-as Vthe plunger W, infretracted?positionafter` the.- explosive K has been insertedfin [the L j" chamberd, a collar-,7L is fitted on therod 'O f withl the practicelof thefinventio`n. V

Referring more V'particularly to the Vdraw-L ing, A designates aeylinder .and B a head threaded finto thev uppermost end of. the cylinder A. YThe cylinder'A is provided at its front end with internal threads C to receive a threaded connection D which supports at Vits front end a tube' E forming an extensionv of the vcylinder andfoi` such ex' ternal diameter as to enable'v thesaid tubeto readily enter a drillhole F in the earth formation G 'andsulomerged under water H. The interior ofthe tube E forms avchamber J into which an explosive K;maybe in-V serted and suitably maintained for deposit,-

ing same in the'bottom of thefdrill holeF.

Disposed within the cylinder A is apiston generally designated by L.` The piston Ly Y is threaded to a hollow rod O and comprises j cylindrical block P screwed on the front end of the rod O and a plate Q threaded on af threaded portion-R of the frodfO, locatedy slightly rearwardly of the endoi:` the rod 0.5 vvBetween the block P andthe plate YQ isdis-v vposed a packing, such as a cup leather'S,

which is held against the wall of the cyl-k vinder A by a washer Tf located in the'cup leather S. Y

To the front end of the block P is threaded'l a rod `U which extends slidablythrough theconnection-D. The rod U carries at 'its front end a lateral flange V to which'is secured a non-metallic plunger W vby meansv of screws X. In the .retracted position of the piston L, the plunger W may occupy a positionin the chamber J adjacent the con-V nection' D, thusforming an Vabutment for the explosive K during the operation vof plosive,V toflthe.v drilllhole il' threaded end" of a stem 1 o; Thestem lfb-may @,'Onftheirearward endof 'thefheadfBis f" y threadeday connection 1Y --having. internal i. threads ZinV its rearward; rendxto receive :the T.

Ybe of-jsuicientlength toextendlwellfabove the Vsurfaceof the?water'gl-llzfy On Athe'rearmy Y' l' i ward endof the stem bris threadedfas'leeve ywhichfactsfas azguide for; therod.jO.,rv a fzAt'tached' to 1 the sleeve :ci is Iaf link d" tof i Y Y y ywhichrmay .be I tied onefendiffof .'an' ignition f `wireA ve,- -th'e'r otherfend vvof which carriesthe 5- i' detonatorf. .Thewiref maybe wrapped or Vtied aroundthe eXplo'siveK :to "retainI the explosive inl thef cliambfer 'Jfd'uring Itheftrfans-v and carries a setv screw'j kwhereby said collar may lhe clamped Vsecurelyto the rodLO.y

The rod'Ofmay beoffany-'suitable length*2fl `anolc'arrie's at itsuppermost end a -connec-` j p tionfmc-.to which gis kconnected r-a Ahose'jlineofj 85 Y l supply (not shown) :to a passage p extending 'l ithroughoutgthe length of. Vthe rod O andcomy j municatingwith thervr cylinder A through ak f1 f vport grin the rod O. In orderto ,enablethe" hose line Voto be detached'from thev c'onnecl. tion c,` a coupling 7- of 'anywell fknown type fmay be interposed betweenfthe'connection 7c', .Y j

for conveying pressure fluid from a source off follows: VAfter `the explosive Vmaterial, 'to- The niode ofoperation'of thedevice isas geher with the detonator and wire have been .inserted in'tojt-hev chamber J5-the device may p be lowered'into thedrill h0le-F sothat the" Uforwardiorope-n endof the tube Erests'onl the bottom of the drill hole F.V Pressure@r fluid `may then beadmitted into the passage i p' ofthe 'rod 'O and such Vpressure .Huidl flowlf ing through the vports V.fg-into `the cylinder A will force the pistonL, together withv the i plunger W, downwardly to compressi-thel exv` plosiveK inthe tube E. Y Only :a light fres'g- -v surewillbenecessary on'the'cylinder o there; f vpiston to eect suchcompression of the; ex-Qfv plosive and during jthis `step in thechfarg.-V 'Y ing of thedrill hole', the weight ofthe def Y deposited iI1.-tlf1e` b'ottomgof `the drill hole.

lisa

Agiterj the fplnng'ei- .WT has heen forcedVY downwardly; ,1 a sniiicienti distance to remove i .alLthe explosii'fie `from the tube 143, a' wire'fe;

may? be detached! from 'the linkV ndf'so cured .toi the hetteryrf.. for Yother means'used for Veiq'lo'cllin'g"the charges' VThe Vdevice may chenV be removedlL fon refilling., Y T0 laddl edf Y caseswhere additional olremges are o required a.V @ordi may be' substituted for; the wire v e5',

on ifr Vdvesireolygra,l wedge'inayi be inserted? #ini the vendv of Vthe tube' fe" to -nmintainf the ex.h

' plosive rwithin the tnbeyw-hilethe devioelis* After fr the. lehanjgei of` 'explosive has' heen y vice willE `offer suoient; fresis'ta'n'ceif to the] y expelled"fiom'theitnbegfthefcoupling 7 mayy 30 pressure yfluid to 'prevent`V raising" oifthe cyl? inder' and oonsequ'ently the Vpremature,exe-V l pulsion of the explosiveifrom., thevzend of.

` A, Jthe device wilhof course,h e}liia-ised.erf-Such raising'of the Vcylinder. however should take'` plaoexslowly and'lnyfbe Controlledilbythe 'operator by' bearing on vthedstern b so thatL the Cylinder willT only reisefin proportion' f i to the degree iniwliiohtheexplosive niayheiecylinden; a piston reoiprocblel thereinpa o plunger; n: tubefa't one? endl of: the Cylinder:

hef disconnected; *whereupon chez Vpressure fluid utilized `for loonnpressing vthe explosive l Q will? he .exhausted.V tothe,v atmosphere.; .The

pistoni. 1:'etiec'ced: im the Cylinder :ind/'the rset".Screw, fagaiirturned to 35 lock. LheoolllaavLf-.L on the rod' O. In this way the piston,as welles chekv plunger, may be lineintainediim retracted position in` readinessY for a 'suooeedingY charge. I dann-: Y Y pneumatic Y i 40 changing device; t oomprisingf aidflipteditowbe inserted' into e1 cliilh hole ancla i formingJ wic'h'arnberf for oonveyingfam eX:4 4,5 y

plosive into Vthey drill :Jhofl'erhollow.-i noob` con#I neoing the plunger and' k'che pistontoutranseV miitrthenioveinenb of the .ipisdbollzto:theaplu141g-V er :for Aexpelling;"suelteY explosive. romjth'ef. i i

tube and oonipressing"itz,iniztleifdzrzfillliole,` 50 sads ro dyk having; a. .pornffor admitting; prese sre luidlxfronfi'V thef rod'- intoothefoylindeng; andineans connectinggthef roda with a, 'presa 

